package chapter03;
class Student2 {
    String name;
    int age;
    void read () {
        System.out.println ("大家好,我是"+name+",年龄"+age) ;
    }
}
public class Example02 {
    public static void main (String[] args) {
        Student stu1 = new Student ();
        Student stu2 = null;
        stu2 =stu1;
        stu1.name = "小明";
        stu1.age = 20;
        stu2.age = 50;
        stu1.read();
        stu2.read();
    }
}
